OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   2 {5 G  c3 D& ~1 @
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   $ e/ i1 L2 I# o, D* q! X( t$ f' J
6. *
   ; @  u8 H* q0 ]8 {3 Y1 ]8 Z. b' F) z, [
7. *   This file contains EDMA3 Test code.
   ( I, j6 r) ~9 w; ^
8. *
   & G5 Y7 j$ w6 b/ X" G- C
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    3 _5 {) f$ \! x3 L( ~" N- |) K  M
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    2 q) M, c1 T6 ~, N& [( m- b
14. *
    " e8 m: n2 v7 y
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    0 v# Y9 s3 E/ ?% h2 Z, l, a0 k/ A
18. *
    1 U, k4 Q" j4 p. s9 g
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    , \1 c9 t. L' Q0 d. X) g& j3 h4 f
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    ) ^: I) Z5 M! P. }* m
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    3 U% f6 Z$ O3 M) }
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    3 Z! x- q. m) t0 l" M' a' ?$ p
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ' Z( `, E% K0 v* ^
35. 
    0 l1 }- t+ D+ }& K9 l
36. #include <mach/memory.h>
    6 G1 e* s# i7 M3 Y
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    + O$ Q3 R" L) j5 W: R
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    # W( n/ F8 K. G6 H
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    9 T" L. V2 m/ m9 U9 D( m9 q
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    ! `# u; }( \" a& Q% S5 X6 L4 s$ k% z  S
49. #define DMA_PRINTK( x... )
    ( O1 T8 t( N" o
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ) q" Z2 U! {0 z& c% Q6 `; w
57. #define ITCINTEN_SHIFT              21
    6 C3 x$ M! }; N' {  o; z
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ! B+ Q" |$ g& A2 s/ F
60. 
    
61. static volatile int irqraised1 = 0;
    2 @: e6 }" h$ Y( V0 |6 `8 ]
62. static volatile int irqraised2 = 0;
    
63. 
    0 [/ C' p% O/ Q: f/ U5 c
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
      [- G! G1 w. A1 x3 `
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' `: _2 u8 p- i/ W6 T" ]" x- ?
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ; O" d9 S: I- [& `% {
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
      R0 p8 ~5 D; ?' I$ p0 F
70. dma_addr_t dmaphysdest1 = 0;
    ) T! ^5 c& _& e2 t
71. dma_addr_t dmaphysdest2 = 0;
    ) d8 v4 V9 ]- _2 p! w0 X0 c) D" y
72. 
    & Z1 G3 j' \) k6 @
73. char *dmabufsrc1 = NULL;
    ' S$ y* N8 e% H& ?- Q# k0 {' S7 L
74. char *dmabufsrc2 = NULL;
    ) V% b9 q1 o' c
75. char *dmabufdest1 = NULL;
    % r, z+ N- W* `  ~
76. char *dmabufdest2 = NULL;
    3 V6 f0 ^, ^8 B+ {. Z
77. 
    & y& U9 X3 c2 E5 q5 {0 B. D
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    3 K/ P& ?% S: ?2 }3 e+ N$ P( c
81. 
    # t# x" o. d0 e$ c# ~6 `& b
82. module_param(acnt, int, S_IRUGO);
    & p; c, N! i( [& H2 y$ i& y6 Y
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

( M: h% ]1 o2 [
      这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。


! s  K( D% F1 o5 J8 z